Effects of Confidentiality-Preserving Geo-Masking on the Estimation of Semivariogram and of the Kriging Variance

Geostatistical methods, such as semivariograms and kriging are well-known spatial tools commonly employed in many disciplines such as health, mining, forestry, meteorology to name only few. They are based essentially on point-referenced data on a continuous space and on the calculation of distances between them. In many practical instances, however, the exact point location, even if exactly known, is geo-masked to preserve confidentiality. This typically happens when dealing with confidential data related to individuals-health and their biometric parameters. In these situations, the estimation of the semivariogram and, hence, the spatial prediction can become biased and highly inefficient. This paper examines the extent of the bias in the particular case when the geo-masking mechanism is known (called “intentional locational error”) and lays the ground to a full understanding of the phenomenon in more general cases. We also examine how the geo-masking affects the estimation of the kriging variance thus reducing the efficiency of spatial prediction. We pursue our aims by developing some theoretical results and by making use of simulated and real data analysis.     

Banal and everyday (inter)nationalism: French and Italian anarchist exiles in London, 1870s–1914

This article explores the anarchists' multilayered theoretical and practical engagement with the concepts and performance of nations, nationalism and national belonging, by applying the frameworks of banal nationalism (understood as an ideology) and everyday nationhood (the daily practices in which nation and nationhood are enacted) as analytical categories, to investigate the Italian and French anarchist exile groups in London between 1870 and 1914. Adopting these theoretical categories proves fruitful in probing the anarchists' perception and enactment of the idea of nation and national belonging, contributing to the literature on the relationship between pre-1914 socialist movements and (inter)nationalism and highlighting the specificity of anarchism therein. Using Fox and Miller-Idriss's four categories of everyday nationhood, we show that while the anarchists explicitly subverted the everyday performance of nationhood, redeploying it along internationalist lines, some forms of attachment to the national did endure and were in fact not always contradictory with anarchist internationalism. Looking at the exilic rituals of this intensely diasporic group thus complicates the simplistic but still pervasive view of a monolithic ideological internationalism and rejection of the national on the part of anarchists.     

The site of Al-Qurainiyah: Topography and phases of an early Islamic coastal settlement on Failaka Island

This paper presents the latest finds from the early Islamic site of Al-Qurainiyah on Failaka Island, Kuwait. Trenches opened to the west of the main late Islamic village led to the identification of residential buildings and a workshop located along the shoreline, while the pottery assemblage suggests a permanent occupation from at least the seventh century CE to the early ninth century CE. The last two years of excavations allowed us to uncover archaeological contexts that seem to indicate a previous occupation, dating to the late Hellenistic period (second century BC). The long-term occupation, strategic position of the settlement facing a wide and well-sheltered lagoon, as well as the installation of a stable settlement in the same period of Al-Qusur—the main early Islamic site of the island—seem to suggest the interpretation of Al-Qurainiyah as a landing place used both in the early Islamic period and beforehand.     

民国时期甘肃民勤传统水利秩序的瓦解与“恢复”

本文以清代民国时期民勤"渠坝"关系为切入点,以数起"水案"为主线,复原了1920-1949年民勤传统水利秩序的转折过程。20世纪20-30年代,民勤传统"渠坝"体制已经因内部的"湖坝斗争""移丘户"问题而濒于瓦解,传统水规形同虚设,水利处于失序状态。1944-1949年国民政府和民勤地方政府试图建立政府主导的新型农田水利体系,促进农业发展。但这一过程未能解决"湖坝"对立与"移丘户"问题,当地民众重拾"传统水规"对抗这些新的水利政策,被重新强化的传统"水规"沿用至20世纪50年代。民国时期在河西走廊的水利建设缺乏改造传统水利秩序的针对性措施,政府力量仅依靠工程技术无法实现现代农田水利体系的建立,也难以真正提升区域经济。     

GOVERNMENT QUALITY AND THE ECONOMIC RETURNS OF TRANSPORT INFRASTRUCTURE INVESTMENT IN EUROPEAN REGIONS

Transport infrastructure investment is a cornerstone of growth‐promoting strategies. However, the link between infrastructure investment and economic performance remains unclear. This may be a consequence of overlooking the role of government institutions. This paper assesses the connection between regional quality of government and the returns of different types of road infrastructure in the regions of the European Union. The results unveil the influence of regional quality of government on the economic returns of transport infrastructure. In weak institutional contexts, investment in motorways—the preferred option by governments—yields significantly lower returns than the more humble secondary road. Government institutions also affect the returns of transport maintenance investment.     

Subjectification in Times of Indebtedness and Neoliberal/Austerity Urbanism

How can we analyse the (re)emergence of squatting in relation to the current housing crisis in Italy? Centred on the case of Rome, the paper theorizes this return as resulting from processes of subjectification in the housing sector linked to the raising of indebtedness as a main dispositif of capitalism under neoliberal/austerity urbanism agendas. The political economy‐oriented literature on neoliberal/austerity urbanism is bridged with the post‐Marxist approach of Maurizio Lazzarato. Debt is seen as the archetype of social relations, shaping and controlling subjectivities, making the “work on yourself” essential to the reproduction of (indebted) society. However, given the circular nature of power, indebtedness can be generative of new processes of subjectification aimed at subverting the same power relation. In this sense, the paper operationalizes the conceptualization of Foucauldian subjectification recently proposed by Judith Revel, emphasizing how subjectification always results from (1) an action/gesture and (2) a consequent deconstruction of the identity.     

Archaeometric Study of Volcanic Lithic Objects from The Longola (Poggiomarino) Protohistoric Site,Southern Italy: Regional Versus Extra‐Regional Provenance

The Longola protohistoric village (spanning from the late Middle Bronze Age to the sixth century bc ) is a perifluvial settlement located in the Sarno River floodplain to the north‐east of Pompeii (southern Italy) and east of the Somma‐Vesuvius volcano. A great abundance of artefacts have been found at Longola and in the neighbouring areas, including a variety of volcanic stone objects, mainly related to building and to the manufacture of ordinary tools and instruments. The aim of our work is to characterize lithic objects (lava pebbles and millstones) and to understand their geological provenance by petrographic and geochemical studies. Compositions of millstone samples (porphyritic phonolitic tephrites) and of a set of pebbles (mainly phonolitic tephrites, leucite–shoshonites and trachytes) are compatible with the Somma‐Vesuvius magmas erupted before 8 ka bp . For the trachyte lithics, an additional source from the Accademia lava dome (Phlegrean Fields) cannot be ruled out. Among the pebble samples, a rhyolite and a poorly evolved trachyte clearly lie outside the compositional variation of the Somma‐Vesuvius and other volcanoes of the Naples area (e.g., Ischia and the Phlegrean Fields) and emphasize an extra‐regional provenance. Ponza Island is the best candidate for the provenance of the above two outlier samples.     

Microstoria,Pacific History,and the Question of Scale: Two or Three Things That We Should Know About Them

This article is prompted by the recent debate on the so-called crisis in the humanities, and the related call for historians to change direction by returning to history of the longue durée. While pointing out that the ‘crisis’ is more influenced by the changing political economy of the tertiary education sector than by specific historiographical practices, I suggest that small-scale analysis remains compatible with global history approaches. Articulating a parallel examination of Pacific historiography and the Italian variant of microhistory, the article argues that the latter provides fertile stimuli for Pacific history. In particular, I maintain that integrating social analysis can serve to counterbalance the over-emphasis on cultural aspects found in much Pacific historiography.     

Seismic Vulnerability Assessment of the Urban Building Environment in Nablus,Palestine

ABSTRACT

This article describes a specifically developed framework to produce a seismic physical vulnerability model of residential buildings in Nablus (Palestine) within the European project SASPARM2.0. Based on the structural taxonomy of the territory, two different forms were defined to collect geometrical and structural data of buildings by different stakeholders (citizens and practitioners). This data was then employed to produce fragility curves using the mechanics-based procedure SP-BELA. To estimate seismic risk, the developed fragility model was combined with a hazard curve for the corresponding location. The described procedure is implemented in a WebGIS platform that allows to georeference and assess the surveyed buildings and define retrofitting strategies. Finally, the article carries out a comparison between the fragility curves of buildings in Nablus and the ones calculated for similar building typologies within a UNDP Jordan project aiming at the integrated risk assessment in Wadi Musa and surroundings.     

Combining residue analysis of floors and ceramics for the study of activity areas at the Garum Shop at Pompeii

In this paper, we propose the application—for the first time in the Mediterranean area—of the combination of the study of chemical residues in floors and ceramics, with the aim of providing information about the activities carried out in archeological buildings. We chose the Garum Shop at Pompeii to test the method. In fact, due to the peculiarity of this archeological context, it provided an ideal case in which the activities performed are in part known, and the ceramic vessels recovered are still in situ. Floor samples were studied by means of spot tests developed in Mexico aimed at identifying the presence of phosphates, fatty acids, and protein residues, while the organic residues preserved in the ceramic matrix of amphorae, dolia, and other ceramic vessels were studied by gas chromatography coupled with mass spectrometry. Moreover, we integrated the data obtained with specific studies directed at better identifying the solid residues found inside two of the amphorae studied: botanical studies of fruit stones recovered in a Dressel 20 amphora and the characterization of the lime preserved in an African amphora. The research allowed for the identification of the traces of some of the activities performed, such as cooking and producing garum in the floors of the building, and the use and re-use of amphorae and dolia before the Vesuvian eruption.